OpenAFS Master Repository branch, master, updated. openafs-devel-1_9_2-543-ge434435

[Gerrit Code Review]

The following commit has been merged in the master branch:
commit e434435bc074450e0d24c05b52a9247b30ea7725
Author: Andrew Deason <adeason@sinenomine.net>
Date:   Tue Jul 27 19:53:01 2021 -0500

    ptserver: Avoid 'pts adduser' on excessive entries
    
    If we have a user in at least OPENAFS_MAXPRLIST groups, trying to use
    that entry will result in PR_GetCPS returning an error, since we
    cannot have a 'prlist' with more than OPENAFS_MAXPRLIST entries. But
    such an error is not discovered until a PR_GetCPS or similar RPC
    actually fails, which means the user is effectively unusable.
    
    So, to catch this earlier, return a PRTOOMANY error when someone tries
    to 'pts adduser' for such a user, refusing to create such an
    excessively-huge entry in the prdb. This isn't perfect, since a
    PR_GetCPS call may still fail if supergroup CPS expansion or a host
    CPS puts us over the limit, but this can help catch the most common
    cases.
    
    Note that we do not prevent creating a group with over
    OPENAFS_MAXPRLIST users in it, even though doing so would make some
    RPCs like PR_ListElements unusable for that group. In that situation,
    such a group is still generally usable (since GetCPS can still work),
    so we don't need to prevent them.
    
    Change-Id: I8857699b34f7f89c64c561f0d3245dde2de893d2
    Reviewed-on: https://gerrit.openafs.org/14733
    Reviewed-by: Cheyenne Wills <cwills@sinenomine.net>
    Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
    Tested-by: BuildBot <buildbot@rampaginggeek.com>
    Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>

 src/ptserver/ptutils.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

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